Cored article and method of producing such articles



Jan. 13, 1927. 1,615,094 y R. E. Mer-AMAND conn ARTICLE Ann METHOD oF PRoDucING sucn ARTICLES Filed Jan. 23. 1923 ll-l-I-I-.' l

- www mail n... 13,1921. r

ruNlTED STATES 1,615,094 PATENT orrlcE.

LOBIET IBNISTHOFABLAND, F CICEBO, ILLINOIS, ABBIGNOB TO WESTERN mc GOIPANY, INOOBPORATED, 0F NEW YORK, N. Y., A CORPORATION 0l NIW YORK.

comun ARTICLE. AND METHOD or rnonncmc suon anneau.

Application illed Jrannary 23, v19133. Serial No. 614,357.

This invention relates to improvements in cored articles and methods of producing such articles.

This invention relates to cored articles and more particularlyto an article in which the core is of fluid material.

In ythe manufacture of cored articles, especiall articles in which the core is composed o material of fluid nature as in the case of fluxV cored solder wherein a iluid or liquid core is employed, it is desirable to revent the escape of the core material while the article 1s being manufactured, during storage or while it is being used.

The principal object of the invention is to prevent the escape of core'material from a cored article.

Another object is to indicate the proper amount of a cored article to be used in a single operation.

In order to accomplish these objects, in accordance with the features of the invention, the cored article u on being formed is paed through means or compressing the sheath or outer covering at lengthwise intervals so that the inside walls of the sheath come into engagement and separate the core material into independent sections, surrounded by the Walls of the sheath material. These and other features will be fully comprehended from the followingf description and the accompanying drawings, 1n

which; Fig. 1 shows the apparatus for making the article; Fig. 2 is a cross sectional view of the die used in forming the cored article; Fig. 3 is a longitudinal sectional view of the die; Fig. 4 is a longitudinal sectional view of the cored article, and Fig. 5 is a plan View of a length of the article.

As shown in Fig. 1 the cored article such as a flux cored solder 1 is formed .in the extruding apparatus, represented generally by the character 2, and then asses between the op ositely placed-tooth wheels 3 and 4, whic may be driven in a suitable manner b means of shafts 5 and 6 respectively. 'Ille teeth upon the rollers 3 vand 4 are spaced to provide the proper amount of solder to be em loyed in one solderingoperation, and the ro 1ers are so arranged that as the cored solder passes between them the teeth squeeze the article at the pro er points to produce thechain 7, as more ully shownin Figs. 4 and 5.

After paing between `the rollers the crimped solder ma `be placed on a spool 9 which may be operated by any suitable motive means' (not shown).

As shown more clearly in Figs. 2 and 3 the fluid orliquid core material is supplied through the pipeI secured in the formin mechanism 2 by means of the thread bushing ymember 16, and passes through a nozzle 17.

In alinement with the opening in the nozzle 17 a die member 18 is provided and secured in the mechanism 2 by meals of a threaded member 19. A supply 20 of the shea-th material such as an ordlnary solder composition placed in the mechanism 2 is forced downward by a plunger 21, actuated by any suitable means (not shown) in such a manner as to extrude the material 20 around the'cnd of the nozzle 17 and through the die 18, thus completely surrounding the fluid core material which passes through the end of the nozzle.

It will be noticed that the ueezing action of the rollers 3 and 4 comp etel prevents any. interchange of the fluid or iquid core between the compartments so formed in the sheath material. Thus during the manufacture or use the fluid core may escape only from the compartments which become opened.

In the use of cored articles lsuch as flux cored solder, it is advisable to indicate to the operator the proper amounts of solder and lux to be used, since in some cases a long length may be necear and in other cases a shorter length may sulicient. By so spacing the teeth on the rollers as to represent the lengths of flux cored articles needed in a single operation of a particular character the proper amount lof soldenand flux to be used will not be left to the discretion of the operator, thus insuring the making of a properly soldered joint without waste of materlals.

For soldering small gauge w-ire to terminals of electrical apparatus it has been found that a spacing of /S provides suitable amounts o flux and solder.

What is claimed is:

1. The method of making fluid core solder which comprises supplying the core material in a continuous stream, extruding solder therearound and crim ing the core solder to prevent the escape el) the core material.

to divide the core into sections.

3. The method omaking a cored article Vwhich comprises simultaneously forming a continuousv core n'd extruding a sheath therearound, and separating portions of the core b portions of the sheath.

4. rIhe method of makinga cored article which comprises extruding a sheath around a liquid core and forming the sheath into independent compartments containing portions of the liquid core.

5. The method of making a cored article which comprises simultaneously forming a continuous core and surroundmg the core with a sheath andthen bringing into enga ment the inner walls of the sheath to iso ate sections of the core.

6. The method of making a cored article which comprises simultaneously forming a continuous core and extruding a sheath therearoundz dividing the core into sections and separating the sections by portions of the sheath.

In witness whereof, I hereunto subscribe ROBERT ERNEST MGFABLAND. 

